Half of the registered voters surveyed for the poll think that the president does not deserve a second term in office, while 41 percent say he does. In another Quinnipiac poll released just four weeks ago, 45 percent said the president did not deserve reelection, while 47 percent said he did.

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The decline in support for a second Obama term comes as his approval rating has dropped 4 percentage points since early March, landing at 42 percent – a record low – in the poll released Wednesday. His disapproval rating has risen from 46 percent to 48 percent.

The downward shift may in part be the result of dissatisfaction over U.S involvement in Libya, with 47 percent of those surveyed saying they oppose it. By a margin of 58 percent to 29 percent, registered voters said that Obama has not clearly stated U.S. goals for the mission.

The poll as conducted March 22-28 and surveyed 2,069 registered voters. The error margin is plus or minus 2.2 percentage points.